Results 91 to 100 of about 14,588 (266)

Tracing early stellar evolution with asteroseismology: pre-main sequence stars in NGC 2264

EPJ Web of Conferences, 2015
Asteroseismology has been proven to be a successful tool to unravel details of the internal structure for different types of stars in various stages of their main sequence and post-main sequence evolution.
Zwintz Konstanze, Fossati Luca, Ryabchikova Tatiana, Guenther David, Aerts Conny   +4 more
doaj   +1 more source

The Quest for Pulsating M Dwarf Stars

Frontiers in Astronomy and Space Sciences, 2019
Recent fully non-adiabatic theoretical studies of M dwarf models show that they have the potential to excite radial, and low-order, low-degree non-radial modes, as well as solar-like oscillations, due to models being completely convective or having large
Cristina Rodríguez-López
doaj   +1 more source

Modelling Neutron-Star Ocean Dynamics

Universe, 2023
We revisit the calculation of mode oscillations in the ocean of a rotating neutron star, which may be excited during thermonuclear X-ray bursts. Our present theoretical understanding of ocean modes relies heavily on the traditional approximation commonly
Fabian Gittins, Thomas Celora, Aru Beri, Nils Andersson   +3 more
doaj   +1 more source

Asteroseismology and evolution of EHB stars

, 2009
The properties of the Extreme Horizontal Branch stars are quite well understood, but much uncertainty surrounds the many paths that bring a star to this peculiar configuration.
Gerald Handler, R. H. Østensen, Sonja Schuh   +2 more
core   +1 more source

Asteroseismology of Pulsating Stars [PDF]

Journal of Astrophysics and Astronomy, 2015
The success of helioseismology is due to its capability of measuring p-mode oscillations in the Sun. This allows us to extract informations on the internal structure and rotation of the Sun from the surface to the core. Similarly, asteroseismology is the study of the internal structure of the stars as derived from stellar oscillations.
Santosh Joshi, Yogesh C. Joshi
openaire   +3 more sources

Nonanalytic Relativistic r-Modes of Slowly Rotating Nonbarotropic Neutron Stars

Universe, 2022
We show that the r-modes of slowly rotating nonbarotropic neutron stars are described by nonanalytic functions of stellar angular velocity, which makes the perturbation techniques, used so far in the r-mode theoretical studies, inapplicable.
Kirill Y. Kraav, Mikhail E. Gusakov, Elena M. Kantor   +2 more
doaj   +1 more source

Asteroseismology of 36 Kepler subgiants – I. Oscillation frequencies, linewidths, and amplitudes [PDF]

Monthly notices of the Royal Astronomical Society, 2020
The presence of mixed modes makes subgiants excellent targets for asteroseismology, providing a probe for the internal structure of stars. Here we study 36 Kepler subgiants with solar-like oscillations and report their oscillation mode parameters.
Yaguang Li, T. Bedding, Tanda Li, S. Bi, D. Stello, Yixiao Zhou, T. White   +6 more
semanticscholar   +1 more source

Inverse Problems in Asteroseismology [PDF]

, 2022
Asteroseismology allows us to probe the internal structure of stars through their global modes of oscillation. Thanks to missions such as the NASA Kepler space observatory, we now have high-quality asteroseismic data for nearly 100 solar-type stars. In this thesis, new techniques to measure the ages, masses, and radii of stars are presented, as well as
openaire   +4 more sources

PBjam: A Python Package for Automating Asteroseismology of Solar-like Oscillators [PDF]

Astronomical Journal, 2020
Asteroseismology is an exceptional tool for studying stars using the properties of observed modes of oscillation. So far the process of performing an asteroseismic analysis of a star has remained somewhat esoteric and inaccessible to nonexperts.
M. Nielsen, G. Davies, W. Ball, A. Lyttle, T. Li, O. Hall, W. Chaplin, P. Gaulme, L. Carboneau, J. Ong, R. Garc'ia, B. Mosser, I. Roxburgh, E. Corsaro, O. Benomar, A. Moya, M. D. O. Physics, Astronomy, U. Birmingham, Stellar Astrophysics Centre, D. Physics, A. University, Center for Space Science, N. Institute, N. Y. U. A. Dhabi, M. F. Sonnensystemforschung, D. O. Astronomy, Yale University, Irfu, Cea, Universit'e Paris-Saclay, Aim, Cnrs, U. Diderot, Sorbonne Paris Cit'e, Lesia, Observatoire de Paris, Universit'e Psl, Sorbonne Universit'e, U. Paris, A. Unit, S. O. Physics, Queen Mary University London, Inaf - Catania, Solar Science Observatory, Naoj, Department of Materials Science, Sokendai, Electrical Engineering, Electronics, Automation, A. P. Department, E.T.S.I.D.I, Polytechnic University of Madrid   +53 more
semanticscholar   +1 more source

Stellar Oscillations Network Group

, 2007
Stellar Oscillations Network Group (SONG) is an initiative aimed at designing and building a network of 1m-class telescopes dedicated to asteroseismology and planet hunting.
Arentoft T, Bedding T R, Butler R P, Christensen-Dalsgaard, Christensen-Dalsgaard J, F Grundahl, H Kjeldsen, Harvey J W, Hekker S, J Christensen-Dalsgaard, Mayor M, Michel E, Michel E, P K Rasmussen, S Frandsen, T Arentoft   +15 more
core   +1 more source